From Dark and Darker Wiki
Crafting is currently up to date for: TODO couldn't find Crafting
Crafting is done through Merchants. You can craft Silver and Gold Weapons, and you can craft Copper, Cobalt, Rubysilver, and Gold Armors.
Some crafts are only unlocked after completing particular Quests. (specifics unknown)
All Craftables
For craftable list for each trader go to their individual page. (Example. Leathersmith)
For craftable list from an ingredient go to their individual page. (Example. Bone)